JPH0532092Y2

JPH0532092Y2 -

Info

Publication number: JPH0532092Y2
Application number: JP1988131488U
Authority: JP
Priority date: 1988-10-07
Filing date: 1988-10-07
Publication date: 1993-08-18
Anticipated expiration: 2003-08-18
Also published as: JPH0251516U

Description

【考案の詳細な説明】（産業上の利用分野）本考案は、レーザ加工または電子ビーム加工に
よつて元端部に穿設した糸取付穴に糸を挿入し、
該糸取付穴をかしめて元端部に糸を固定するアイ
レス縫合針の改良に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention involves inserting a thread into a thread attachment hole drilled at the base end by laser processing or electron beam processing.
The present invention relates to an improvement in an eyeless suture needle in which a thread is fixed to the proximal end by caulking the thread attachment hole.

（従来技術）従来、アイレス縫合針の元端部に設けられた糸
取付穴は、ドリル加工等或いはレーザ加工、電子
ビーム加工等によつて穿設されていた。(Prior Art) Conventionally, a thread attachment hole provided at the proximal end of an eyeless suture needle has been made by drilling, laser processing, electron beam processing, or the like.

ドリル加工等による糸取付穴の穿設について
は、所定形状に穿設することが容易であり、糸の
太さに合わせた穴形を形成するのに都合が良い。
しかし、糸に針を固定するために該糸取付穴をか
しめたとき、該穴内面が平滑に形成されているの
で糸止まりが不十分になつて糸が抜けたり元端縁
が鋭利になり過ぎて糸を噛み切るといつた不都合
があつた。更には、かしめによつて穴の至端部が
ひび割れを起こし、糸取付穴の強度が低下するこ
とがあつた。 When forming thread attachment holes by drilling or the like, it is easy to form holes in a predetermined shape, and it is convenient to form a hole shape that matches the thickness of the thread.
However, when the thread attachment hole is caulked to secure the needle to the thread, the inner surface of the hole is formed smoothly, so the thread is not held tightly enough, causing the thread to fall out or the base edge to become too sharp. There was an inconvenience when the thread was bitten. Furthermore, caulking sometimes caused cracks at the extreme ends of the holes, reducing the strength of the thread attachment holes.

また、レーザ加工或いは電子ビーム加工による
糸取付穴の穿設については、その熱による加工の
ために針材が軟らかくなるので、前述のようなか
しめによる穴の至端部のひび割れや元端縁で糸を
噛み切るといつた不都合は回避することができ
る。しかし、このような熱的加工によると、針材
が溶融後に凝固して鏡面状の糸取付穴内面が形成
されてしまい、該糸取付穴をかしめて糸を固定し
ても糸止まりが悪い。更にはレーザ加工または電
子ビーム加工による穿設は、該穴表面に凸凹のう
ねりができてしまい、所定形状に穿設するのが困
難であるために糸の太さに合わせた穴形を形成す
るのに都合が悪かつた。 In addition, when drilling thread attachment holes by laser processing or electron beam processing, the needle material becomes soft due to the heat processing, so cracks at the extreme end of the hole due to caulking as described above or the original edge may occur. You can avoid the inconvenience caused by biting the thread. However, with such thermal processing, the needle material solidifies after being melted, forming a mirror-like inner surface of the thread attachment hole, and even if the thread attachment hole is caulked to secure the thread, the thread stays poorly. Furthermore, when drilling by laser processing or electron beam processing, uneven undulations are formed on the surface of the hole, making it difficult to drill into a predetermined shape. It was inconvenient.

また、最近では前記糸取付穴での糸止まりを強
固にするために、該穴内面にネジを形成したも
の、該穴内の開口部近傍に突起を爪状に形成した
もの、該穴内面を酸化させて微小の凹凸を形成し
たもの等がみられる。しかし、前記ネジ山は糸取
付穴をかしめたときにその連続したネジ山の頂上
で糸を噛み切ることがあり、また前記爪状の突起
は糸取付穴内面に部分的に成形する製造工程が複
雑でコストが高くなり、また前記酸化させるもの
は穴内面のみ酸化させることが困難である。 In addition, recently, in order to strengthen the thread stop in the thread attachment hole, there are some in which a screw is formed on the inner surface of the hole, some in which a protrusion is formed in the shape of a claw near the opening in the hole, and some in which the inner surface of the hole is oxidized. There are some cases where minute irregularities have been formed. However, when the thread attachment hole is caulked, the thread may be bitten off at the top of the continuous thread, and the claw-like protrusion is formed in a manufacturing process in which it is partially formed on the inner surface of the thread attachment hole. It is complicated and expensive, and it is difficult to oxidize only the inner surface of the hole.

そこで、それらの不都合を解消するために特公
昭61−59172号公報によるアイレス縫合針が提案
されている。該アイレス縫合針は、その糸取付穴
をレーザ加工もしくは電子ビーム加工によつて穿
設し、続いて該穴をドリル等の穴明工具によつて
糸の太さに合わせて成形したものである。 Therefore, in order to eliminate these inconveniences, an eyeless suture needle has been proposed in Japanese Patent Publication No. 61-59172. The eyeless suture needle has a thread attachment hole drilled by laser processing or electron beam processing, and then the hole is shaped using a drilling tool such as a drill to match the thickness of the thread. .

該糸取付穴をレーザ加工或いは電子ビーム加工
によつて穿設した際には、その内面に形成された
凸凹のうねりを糸止めに利用可能であるが、ドリ
ル等の穴明工具によつて所定形状に該穴形に成形
する際に該穴内に形成された凸面が前記工具によ
つて削られて凹面のみとなり、糸取付穴をかしめ
て糸を固定した後もそれほど糸止めの強固さを期
待することはできなかつた。 When the thread attachment hole is drilled by laser machining or electron beam machining, the uneven undulations formed on the inner surface can be used to secure the thread. When forming the hole into the shape, the convex surface formed in the hole is shaved off by the tool, leaving only a concave surface, so even after the thread attachment hole is caulked and the thread is fixed, it is expected that the thread stop will not be as strong. I couldn't do it.

（解決すべき課題）かかる不都合を解消し、本考案は、糸取付穴で
の強固な糸止めを可能としたアイレス縫合針を提
供することを目的とする。(Problems to be Solved) The object of the present invention is to eliminate such inconveniences and provide an eyeless suture needle that enables firm thread fixation at the thread attachment hole.

（課題を解決するための手段）かかる目的を達成すべく本考案は、レーザ加工
加工または電子ビーム加工加工によつて形成した
糸取付穴を備えたアイレス縫合針において、前記
糸取付穴の内面に綾目ローレツトを形成したこと
を特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention provides an eyeless suture needle equipped with a thread attachment hole formed by laser processing or electron beam processing. It is characterized by the formation of twill knurling.

（作用）かかる手段により、前記糸取付穴内面の綾目ロ
ーレツトは、該糸取付穴をかしめてそこに糸を固
定する際、該綾目ローレツトの各々の頂点が糸の
表面に万遍なく均等に喰い込み、該糸を固定す
る。(Function) With this means, the twill knurling on the inner surface of the thread attachment hole allows the apex of each twill knurl to be evenly distributed over the surface of the thread when the thread attachment hole is caulked and the thread is fixed therein. and fix the thread.

該糸取付穴は、レーザ加工或いは電子ビーム加
工によつて予め明けられた穴を下穴とし、その穿
設時に照射したレーザまたは電子ビームの熱によ
つて針材が軟化し、綾目ローレツト加工用のドリ
ル状工具による該穴の穿設が容易となる。 The thread attachment hole is a pilot hole drilled in advance by laser machining or electron beam machining, and the needle material is softened by the heat of the laser or electron beam irradiated at the time of drilling, resulting in twill knurling. The hole can be easily drilled using a drill-like tool.

（実施例）本考案の一実施例を図面によつて説明すれば次
の通りである。(Example) An example of the present invention will be described below with reference to the drawings.

第１図は本考案の実施例のアイレス縫合針１の
元端部に設けた糸取付穴２を示す断面図、第２図
は本実施例の糸取付穴２に縫合用の糸ａを止めた
ところを示す断面図、第３図は本実施例の糸取付
穴２の製造工程を示す説明図、第４図は本実施例
で使用したドリルｂの刃先形状を示す平面図であ
る。 Fig. 1 is a sectional view showing the thread attachment hole 2 provided at the proximal end of the eyeless suture needle 1 according to the embodiment of the present invention, and Fig. 2 shows the suture thread a fixed in the thread attachment hole 2 of the embodiment. FIG. 3 is an explanatory diagram showing the manufacturing process of the thread attachment hole 2 of this embodiment, and FIG. 4 is a plan view showing the shape of the cutting edge of drill b used in this embodiment.

糸取付穴２はアイレス縫合針１の元端部に設け
られており、該糸取付穴２の内面には綾目ローレ
ツト３が形成されている。該綾目ローレツト３
は、その各々が略角錐状に形成されており、第３
図示のように、レーザを照射して穿設した下穴４
にドリルｂを使用して成形する。このドリルｂの
形状は、第４図示のように二枚の刃を備えたもの
であり、第一切刃ｃと第二切刃ｄとを有する。該
第一切刃ｃと第二切刃ｄは互いに周方向にずれた
位置に設けられているので、該ドリルｂを回転さ
せながら下穴４に挿入して切削することにより、
綾目ローレツト３の各々の略角錐状の細かい突起
が螺旋状に配設されて糸取付穴２内面に形成され
る。更に、針材は下穴４を穿設したレーザの熱に
よつて焼きなましをしたと同様となるので、該ド
リルｂにより綾目ローレツト３が容易に成形され
る。 The thread attachment hole 2 is provided at the proximal end of the eyeless suture needle 1, and a twill knurl 3 is formed on the inner surface of the thread attachment hole 2. The twill knurling 3
are each formed into a substantially pyramidal shape, and the third
As shown in the figure, the pilot hole 4 was drilled by laser irradiation.
Shape using drill b. The shape of this drill b is provided with two blades as shown in the fourth figure, and has a first cutting edge c and a second cutting edge d. Since the first cutting edge c and the second cutting edge d are provided at positions offset from each other in the circumferential direction, by inserting the drill b into the prepared hole 4 while rotating the drill b and cutting,
Each of the twill knurlings 3 has a substantially pyramid-shaped fine projection arranged in a spiral manner and formed on the inner surface of the thread attachment hole 2. Further, since the needle material becomes the same as if it had been annealed by the heat of the laser that drilled the pilot hole 4, the twill knurling 3 can be easily formed by the drill b.

該糸ａを前記糸取付穴２に取り付ける際には、
第２図示のように、該糸取付穴２をかしめて該穴
２内面で糸ａを押さえつけて固定する。このとき
該穴内面に形成した綾目ローレツト３は、その
各々の頂点が糸ａ表面に喰い込み、確実に糸ａを
固定する。 When attaching the thread a to the thread attachment hole 2,
As shown in the second figure, the thread attachment hole 2 is caulked and the thread a is pressed and fixed on the inner surface of the hole 2. At this time, each vertex of the twill knurling 3 formed on the inner surface of the hole bites into the surface of the thread a, and securely fixes the thread a.

以上のように設けられたアイレス縫合針１の糸
取付穴２は、綾目ローレツト３の各々の略角錐の
頂点の内径が糸ａの外径より大径に形成されてい
るので容易に糸ａを取り付けられる。 The thread attachment hole 2 of the eyeless suture needle 1 provided as described above is formed so that the inner diameter of the apex of each substantially pyramid of the twilled knurls 3 is larger than the outer diameter of the thread a, so that the thread a can be easily attached to the thread a. can be attached.

そして、該糸取付穴２をかしめて糸ａを該穴２
に固定した場合にも、綾目ローレツト３が糸ａを
確実に押さえるので該糸ａが抜けることがない。 Then, caulk the thread attachment hole 2 and attach the thread a to the hole 2.
Even when the thread is fixed to , the twill knurling 3 reliably holds down the thread a, so that the thread a does not come off.

（効果）従つて、本考案によるときには、前記綾目ロー
レツトは、連続したネジ山とは違つて断続的に糸
表面に喰い込むのでその頂点で糸を噛み切ること
がなく、強固に糸止めすることができる。(Effect) Therefore, according to the present invention, unlike continuous threads, the twill knurling bites into the thread surface intermittently, so the thread is not bitten off at its apex, and the thread is firmly secured. be able to.

また、前記糸取付穴が、レーザ加工或いは電子
ビーム加工によつて予め下穴が穿設され、その熱
で針材は焼きなましされた状態となつているので
ドリルにより綾目ローレツトが容易に成形できる
と共に、その成形の際に該綾目ローレツトの各々
の角錐の頂点の内径を容易に糸の太さに合わせる
ことができ、更に該穴をかしめてそこに糸を固定
してもその至端部がひび割れを起こすことがない
ので、製造が容易で糸の固定が確実なアイレス縫
合針を提供することができる。 In addition, the thread attachment hole is pre-drilled by laser machining or electron beam machining, and the needle material is annealed by the heat, so that the twill knurling can be easily formed with a drill. At the same time, the inner diameter of the apex of each pyramid of the twilled knurling can be easily adjusted to the thickness of the thread during forming, and furthermore, even if the hole is caulked and the thread is fixed there, the extreme end Since the eyeless suture needle does not cause cracks, it is possible to provide an eyeless suture needle that is easy to manufacture and securely fixes the thread.

[Brief explanation of the drawing]

第１図は本考案の実施例の糸取付穴を示す部分
断面図、第２図は本実施例の糸を止めた糸取付穴
を示す部分断面図、第３図は本実施例の製造工程
の説明図、第４図は本実施例で使用したドリルの
刃先形状を示す平面図である。１……アイレス縫合針、２……糸取付穴、３…
…綾目ローレツト。 Figure 1 is a partial sectional view showing the thread attachment hole of the embodiment of the present invention, Figure 2 is a partial sectional view showing the thread attachment hole in which the thread of this embodiment is fixed, and Figure 3 is the manufacturing process of this embodiment. FIG. 4 is a plan view showing the shape of the cutting edge of the drill used in this example. 1...Eyeless suture needle, 2...Thread attachment hole, 3...
...Roletsu Ayame.

Claims

[Scope of utility model registration request]

In an eyeless suture needle equipped with a thread attachment hole formed by laser processing or electron beam processing,
An eyeless suture needle characterized in that a twill knurl is formed on the inner surface of the thread attachment hole.